Stick device for a work machine and work machine

Abstract

The application discloses a bucket rod device for a working machine and the working machine, the bucket rod device comprising a bucket rod and a plurality of connecting seat assemblies, the plurality of connecting seat assemblies are arranged on the bucket rod and are spaced along the axial direction of the bucket rod, and the connecting seat assemblies are detachably connected with a boom assembly of the working machine and can rotate relative to the boom assembly. The bucket rod device is simple in structure, when the boom assembly of the working machine is connected with the connecting seat assemblies at different positions, different working radii of the working machine can be adjusted, a plurality of bucket rods with different lengths are not needed to be manufactured, the adjustment of the digging range and the digging force of the working machine can be realized, the application range of the working machine and the adaptability to different construction conditions are expanded, the manufacturing cost and the transportation cost are saved, and the standby bucket rod is avoided from being idle and wasted.

Description

Technical Field

[0001] This application belongs to the field of operating machinery technology, specifically relating to a boom device for operating machinery and the operating machinery itself. Background Technology

[0002] Construction machinery (such as excavators) primarily uses hydraulic cylinders to drive the boom and stick, among other connecting mechanisms, to retract and tilt the bucket, thereby achieving excavation and unloading operations. With the development of construction technology, the operating conditions of construction machinery are becoming increasingly diverse. For example, to accommodate a larger excavation range, longer booms are sometimes required at construction sites. However, replacing the existing boom with an extended boom not only creates inconvenience for on-site assembly and disassembly but also results in the disassembled boom remaining idle, leading to resource waste. Furthermore, the random pairing of different booms with construction machinery increases the number of components, requiring additional transportation units during relocation and increasing transportation costs. Utility Model Content

[0003] The purpose of this application is to provide a boom device for working machinery and the working machinery itself, which has the advantages of simple structure and the ability to adjust the working range of the working machinery.

[0004] To achieve the above objectives, the first aspect of this application provides a boom device for working machinery, the boom device comprising: pole; Multiple connecting seat assemblies are all mounted on the boom and distributed at intervals along the axial direction of the boom. The connecting seat assemblies are detachably connected to the boom assembly of the working machine and can rotate relative to the boom assembly.

[0005] In embodiments of this application, the boom assembly includes a boom and a stick drive member disposed on the boom, and the connecting seat assembly includes: Rear support for detachable connection with the boom; The connecting seats are spaced apart on the side of the bucket of the rear support away from the working machinery and are detachably connected to the stick drive.

[0006] In the embodiments of this application, the rear support and the boom are connected by a first pin, and the connecting seat and the stick drive are connected by a second pin.

[0007] In embodiments of this application, the stick device further includes: The first limiting component is disposed on the first pin and is used to axially limit the first pin; The second limiting component is disposed on the second pin and is used to axially limit the second pin.

[0008] In an embodiment of this application, a first connecting hole is formed on the rear support for the first pin to pass through, a second connecting hole is formed on the connecting seat for the second pin to pass through, a first guide segment is formed on the first connecting hole for guiding the first pin, and a second guide segment is formed on the second connecting hole for guiding the second pin.

[0009] In an embodiment of this application, a first connecting portion and a first thickened portion are formed on the rear support. The first connecting portion is connected to the stick, and the first thickened portion is disposed on one side of the first connecting portion. In the width direction of the stick, the thickness of the first thickened portion is greater than the thickness of the first connecting portion, and a first connecting hole is formed on the first thickened portion. The connecting seat has a second connecting part and a second thickened part. The second connecting part is connected to the stick. The second thickened part is disposed on one side of the second connecting part. In the width direction of the stick, the thickness of the second thickened part is greater than the thickness of the second connecting part. A second connecting hole is formed on the second thickened part.

[0010] In the embodiments of this application, the rear support and the boom are integrally formed.

[0011] In the embodiments of this application, the length of the stick ranges from 3m to 15m, and the distance between two adjacent rear supports ranges from 2m to 4m.

[0012] In the embodiments of this application, the boom includes a bucket connection part and a boom connection part. The bucket connection part is connected to the bucket of the working machine, and the boom connection part is located on the side of the bucket connection part away from the bucket. The connecting seat assembly is disposed on the boom connection part. In the vertical plane, the width of the boom connection part is greater than the width of the bucket connection part.

[0013] A second aspect of this application provides a working machine that includes the aforementioned boom device for working machines.

[0014] As can be seen from the above technical solution, the stick device includes a stick and multiple connecting seat assemblies. These connecting seat assemblies are all mounted on the stick and spaced apart along its axial direction. The connecting seat assemblies are detachably connected to the boom assembly of the working machinery and can rotate relative to the boom assembly. This stick device has a simple structure. When the boom assembly of the working machinery is connected to the connecting seat assemblies at different positions, different working radii of the working machinery can be adjusted. It eliminates the need to manufacture multiple sticks of different lengths, thus enabling adjustments to the digging range and digging force of the working machinery. This expands the applicability of the working machinery and its adaptability to different construction conditions, saves manufacturing and transportation costs, and avoids the waste of idle spare sticks.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram showing the connection between the boom assembly and the first connecting seat assembly in an embodiment of this application; Figure 2 This is a schematic diagram showing the connection between the boom assembly and the second connecting seat assembly in an embodiment of this application; Figure 3 This is a schematic diagram of the boom structure in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures 1-Stick; 101-Bucket connection; 102-Boom connection; 2-Bucket; 3-Connecting seat assembly; 301-Rear support; 302-Connecting seat; 303-First connecting seat assembly; 304-Second connecting seat assembly; 4-Boom assembly; 401-Boom; 5-First pin; 6-Second pin. Detailed Implementation

[0018] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0019] Embodiments of this application provide a boom device for working machinery, such as... Figure 1 and Figure 2 As shown, the boom device includes: pole 1; Multiple connecting seat assemblies 3 are all mounted on the boom 1 and distributed at intervals along the axial direction of the boom 1. The connecting seat assemblies 3 are detachably connected to the boom assembly 4 of the working machine and can rotate relative to the boom assembly 4.

[0020] Specifically, the working machinery in this embodiment can be an excavator and also includes a vehicle body, a bucket 2, and a bucket drive component (such as a hydraulic cylinder). The bucket 2 is rotatably mounted at the bottom end of the stick 1. The bucket drive component is mounted on the stick 1. The stick device also includes a front support and an intermediate support mounted on the stick 1. The front support is mounted at the end of the stick 1 near the bucket 2, and the intermediate support is mounted on the side of the stick 1 away from the front support. The front support is rotatably connected to the bucket 2, and the intermediate support is drivenly connected to the bucket drive component. Under the driving action of the bucket drive component, the bucket 2 rotates relative to the stick 1 to realize the digging function of the working machinery. The boom assembly 4 includes a boom 401 and a stick drive (such as a hydraulic cylinder). One end of the boom 401 is rotatably connected to the vehicle body. The stick drive is mounted on the boom 401. The connecting seat assembly 3 has a first connecting end and a second connecting end. The first connecting end is rotatably connected to the boom 401, and the second connecting end is drivenly connected to the stick drive. Under the driving action of the stick drive, the stick 1 rotates relative to the boom 401 so as to move the bucket 2 to the position to be excavated or to transfer the excavated material. In this embodiment, the number of connecting seat assemblies 3 is two (or three, four, or other numbers). These two connecting seat assemblies 3 include a first connecting seat assembly 303 and a second connecting seat assembly 304. The first connecting seat assembly 303 is located at the end of the stick 1 furthest from the bucket 2, and the second connecting seat assembly 304 is located between the bucket 2 and the first connecting seat assembly 303. When the boom assembly 4 is connected to the first connecting seat assembly 303, the working length of the stick 1 (the working length of the stick 1 refers to the distance between the connection point of the stick 1 and the boom 401 and the connection point of the stick 1 and the bucket 2) is relatively... When the boom assembly 4 is connected to the second connecting seat assembly 304, the working length of the boom 1 is shorter and the front force wall of the boom 1 is shorter. At this time, the digging force generated at the front of the bucket 2 is smaller, which is suitable for pure earthmoving operations with a large working range but a small digging force requirement. When the boom assembly 4 is connected to the second connecting seat assembly 304, the working length of the boom 1 is shorter and the front force wall of the boom 1 is shorter. At this time, the digging force generated at the front of the bucket 2 is larger, which is suitable for earthmoving operations with a small working range but a large digging force requirement. At this time, the weight of the part of the boom 1 near the boom assembly 4 at the connection position between the boom assembly 4 and the second connecting seat assembly 304 can increase the locking force of the boom drive component.

[0021] The boom device in this embodiment has a simple structure. When the boom assembly 4 of the working machine is connected to the connecting seat assembly 3 at different positions, the different working radii of the working machine can be adjusted. There is no need to manufacture multiple booms 1 of different lengths. The digging range and digging force of the working machine can be adjusted, which expands the application range of the working machine and its adaptability to different construction conditions, saves manufacturing and transportation costs, and avoids the waste of spare booms 1.

[0022] In one embodiment of this application, such as Figure 3As shown, the boom assembly 4 includes a boom 401 and a stick drive unit disposed on the boom 401, and the connecting seat assembly 3 includes: Rear support 301 is used for detachable connection with boom 401; The connecting seat 302 is spaced apart on the side of the bucket 2 away from the working machinery from the rear support 301 and is detachably connected to the stick drive component.

[0023] When the working length of the stick 1 needs to be adjusted, the operator disassembles the rear support 301 (such as the rear support 301 of the first connecting seat assembly 303) at one connection position of the stick 1 from the boom 401, and disassembles the connecting seat 302 (such as the connecting seat 302 of the first connecting seat assembly 303) from the stick drive (not shown in the figure). Then, the boom 401 is connected to the rear support 301 at another connection position of the stick 1 (such as the rear support 301 of the second connecting seat assembly 304), and the stick drive is connected to the connecting seat 302 at another connection position of the stick 1 (such as the connecting seat 302 of the second connecting seat assembly 304). The above configuration makes the stick 1 simple in structure, easy to manufacture, and inexpensive to produce.

[0024] In one embodiment of this application, the rear support 301 and the boom 401 are connected by a first pin 5, and the connecting seat 302 and the stick drive are connected by a second pin 6.

[0025] Specifically, a first connecting hole is formed on the rear support 301, a second connecting hole is formed on the connecting seat 302, a third connecting hole corresponding to the first connecting hole is formed on the boom 401, and a fourth connecting hole corresponding to the second connecting hole is formed on the stick drive component. By inserting the first pin 5 into the first and third connecting holes, the rear support 301 and the boom 401 can be connected. By removing the first pin 5 from the first and third connecting holes, the rear support 301 and the boom 401 can be disassembled. Similarly, by inserting the second pin 6 into the second and fourth connecting holes, the connecting seat 302 and the stick drive component can be connected. By removing the second pin 6 from the second and fourth connecting holes, the connecting seat 302 and the stick drive component can be disassembled. The above arrangement facilitates the installation or disassembly of the stick device and the boom assembly 4, saving time and effort, and improving the efficiency of the installation or disassembly of the stick device and the boom assembly 4.

[0026] In one embodiment of this application, the stick device further includes: The first limiting component is disposed on the first pin 5 and is used to axially limit the first pin 5; The second limiting component is disposed on the second pin 6 and is used to axially limit the second pin 6.

[0027] Specifically, the first pin 5 has a first insertion hole and a second insertion hole respectively distributed radially along the first pin 5 at both axial ends, and the second pin 6 has a third insertion hole and a fourth insertion hole respectively distributed radially along the second pin 6 at both axial ends. The first limiting component includes a first pin and a second pin. After the operator connects the rear support 301 and the boom 401 together through the first pin 5, the first pin and the second pin are respectively inserted into the first insertion hole and the second insertion hole, which can limit the axial movement of the first pin 5 and further improve the connection stability of the rear support 301 and the boom 401. The second limiting component includes a third pin and a fourth pin. After the operator connects the connecting seat 302 and the stick drive component together through the second pin 6, the second pin is respectively inserted into the third insertion hole and the fourth insertion hole, which can limit the axial movement of the second pin 6 and further improve the connection stability of the connecting seat 302 and the stick drive component.

[0028] In one embodiment of this application, a first connecting hole is formed on the rear support 301 for the first pin 5 to pass through, and a second connecting hole is formed on the connecting seat 302 for the second pin 6 to pass through. A first guide segment is formed on the first connecting hole for guiding the first pin 5, and a second guide segment is formed on the second connecting hole for guiding the second pin 6.

[0029] Specifically, the first connecting hole also includes a first connecting section, and a first guide section located at one axial end of the first connecting section and in a funnel shape (the radius of the first guide section gradually decreases in the direction gradually approaching the first connecting section). When installing the first pin 5, the operator inserts the first pin 5 into the first connecting hole and the third connecting hole from the first guide section, further improving the installation efficiency of the first pin 5 and the connection convenience of the rear support 301 and the boom 401. Similarly, the second connecting hole also includes a second connecting section, and a second guide section located at one axial end of the second connecting section and in a funnel shape (the radius of the second guide section gradually decreases in the direction gradually approaching the second connecting section). When installing the second pin 6, the operator inserts the second pin 6 into the second connecting hole and the fourth connecting hole from the second guide section, further improving the installation efficiency of the second pin 6 and the connection convenience of the connecting seat 302 and the stick drive component.

[0030] In one embodiment of this application, a first connecting portion and a first thickened portion are formed on the rear support 301. The first connecting portion is connected to the stick 1, and the first thickened portion is disposed on one side of the first connecting portion. In the width direction of the stick 1, the thickness of the first thickened portion is greater than the thickness of the first connecting portion, and a first connecting hole is formed on the first thickened portion. A second connecting portion and a second thickened portion are formed on the connecting seat 302. The second connecting portion is connected to the stick 1. The second thickened portion is disposed on one side of the second connecting portion. In the width direction of the stick 1, the thickness of the second thickened portion is greater than the thickness of the second connecting portion. A second connecting hole is formed on the second thickened portion.

[0031] Specifically, in this embodiment, one side of the first connecting part is connected to the stick 1, and the side of the first connecting part away from the stick 1 is connected to the first thickened part. The thickness of the first thickened part is greater than the thickness of the first connecting part, which helps to reduce stress concentration on the rear support 301, improves the load-bearing capacity of the rear support 301, and effectively prevents fatigue damage to the rear support 301. Similarly, one side of the second connecting part is connected to the stick 1, and the side of the second connecting part away from the stick 1 is connected to the second thickened part. The thickness of the second thickened part is greater than the thickness of the second connecting part, which helps to reduce stress concentration on the connecting seat 302, improves the load-bearing capacity of the connecting seat 302, and effectively prevents fatigue damage to the connecting seat 302.

[0032] In one embodiment of this application, the rear support 301 and the stick 1 are integrally formed. Specifically, in this embodiment, the rear support 301 and the stick 1 can be integrally formed by casting, which can avoid micro-movement, misalignment and additional deformation caused by stress concentration at the connection position of the rear support 301 and the stick 1. It is also conducive to the digging force being transmitted to the bucket 2 more directly and without loss, which is beneficial to improving the operational stability and accuracy of the digging device.

[0033] In one embodiment of this application, the length of the boom 1 ranges from 3m to 15m, and the distance between two adjacent rear supports 301 ranges from 2m to 4m. In this embodiment, the length of the boom 1 is preferably 10m, and the distance between two adjacent rear supports 301 is preferably 3m. This arrangement ensures that multiple connecting seat assemblies 3 can be installed on the boom 1 to expand the working length adjustment range of the boom 1, and also helps to achieve a balance between the number of connecting seat assemblies 3 and the working length adjustment requirements of the boom 1. Furthermore, it helps to simplify the structure of the boom device and avoid wasting manufacturing materials. Further, in this embodiment, the distance between the bucket 2 and the connecting seat assembly 3 closest to the bucket 2 ranges from 2m to 4m. This arrangement allows the boom 1, the boom 401, and the bucket 2 to better coordinate in order to complete the digging work.

[0034] In one embodiment of this application, the stick 1 includes a bucket connection portion 101 and a boom connection portion 102. The bucket connection portion 101 is connected to the bucket 2 of the working machinery, and the boom connection portion 102 is located on the side of the bucket connection portion 101 away from the bucket 2. A connecting seat assembly 3 is disposed on the boom connection portion 102. In the vertical plane, the width of the boom connection portion 102 is greater than the width of the bucket connection portion 101. Specifically, in this embodiment, multiple connecting seat assemblies 3 are spaced apart on the boom connection portion 102. The above-mentioned arrangement of the bucket connection portion 101 can make the stick 1 have strong structural strength. The above-mentioned arrangement of the bucket connection portion 101 is conducive to the stick 1 to remove unnecessary materials to the greatest extent, realize lightweight design, reduce the energy consumption of the excavating device and improve the operating speed and movement flexibility of the excavating device, and also improve the stress distribution of the stick 1 and increase the fatigue life of the stick 1.

[0035] Another embodiment of this application provides a working machine that includes the boom device for working machines described in the above embodiments.

[0036] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A boom device for working machinery, characterized in that, The boom device includes: Pole (1); Multiple connecting seat assemblies (3) are all disposed on the stick (1) and distributed at intervals along the axial direction of the stick (1). The connecting seat assembly (3) is detachably connected to the boom assembly (4) of the working machine and can rotate relative to the boom assembly (4).

2. The boom device for working machinery according to claim 1, characterized in that, The boom assembly (4) includes a boom (401) and a stick (1) drive member disposed on the boom (401), and the connecting seat assembly (3) includes: Rear support (301) for detachable connection with the boom (401); The connecting seat (302) is spaced apart on the side of the rear support (301) away from the bucket (2) of the working machine and is detachably connected to the stick (1) drive.

3. The boom device for working machinery according to claim 2, characterized in that, The rear support (301) and the boom (401) are connected by a first pin (5), and the connecting seat (302) and the stick (1) drive are connected by a second pin (6).

4. The boom device for working machinery according to claim 3, characterized in that, The boom device also includes: The first limiting component is disposed on the first pin (5) and is used to axially limit the first pin (5); The second limiting component is disposed on the second pin (6) and is used to axially limit the second pin (6).

5. The boom device for working machinery according to claim 3, characterized in that, The rear support (301) has a first connecting hole for the first pin (5) to pass through, and the connecting seat (302) has a second connecting hole for the second pin (6) to pass through. The first connecting hole has a first guide segment for guiding the first pin (5), and the second connecting hole has a second guide segment for guiding the second pin (6).

6. The boom device for working machinery according to claim 5, characterized in that, The rear support (301) has a first connecting part and a first thickening part. The first connecting part is connected to the stick (1). The first thickening part is disposed on one side of the first connecting part. In the width direction of the stick (1), the thickness of the first thickening part is greater than the thickness of the first connecting part. The first connecting hole is formed on the first thickening part. The connecting seat (302) has a second connecting part and a second thickened part. The second connecting part is connected to the stick (1). The second thickened part is disposed on one side of the second connecting part. In the width direction of the stick (1), the thickness of the second thickened part is greater than the thickness of the second connecting part. The second connecting hole is formed on the second thickened part.

7. The boom device for working machinery according to claim 2, characterized in that, The rear support (301) is integrally formed with the stick (1).

8. The boom device for working machinery according to claim 2, characterized in that, The length of the boom (1) ranges from 3m to 15m, and the distance between two adjacent rear supports (301) ranges from 2m to 4m.

9. The boom device for working machinery according to any one of claims 1-8, characterized in that, The boom (1) includes a bucket connection part (101) and a boom connection part (102). The bucket connection part (101) is connected to the bucket (2) of the working machine. The boom connection part (102) is located on the side of the bucket connection part (101) away from the bucket (2). The connecting seat assembly (3) is disposed on the boom connection part (102). In the vertical plane, the width of the boom connection part (102) is greater than the width of the bucket connection part (101).

10. A type of operating machinery, characterized in that, The working machinery includes a boom device for working machinery according to any one of claims 1-9.

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